How do I add Google resources as locations in BusyCal?
BusyCal does not directly support Google resources, such as conference rooms, but there is a work around.
In BusyCal, you can add a resource to an event as an attendee. To do that, you'll need the email address for the Google resource. Here's what to do:
In BusyCal, double-click on the Google resource calendar that appears in the left sidebar to open the calendar info dialog.
The Description field will display a long email address. Copy it to your clipboard and close the Calendar Info dialog.
Launch Apple Contacts (or BusyContacts) and create a new contact with the name you want to use for that resource, and paste the email address from your clipboard to the email field.
Now, in BusyCal, when you want to schedule that resource, just add it as an attendee by typing in the name of the contact you created in step 3.